• Home
• io.taig
• phoenix-models_2.11
• 1.0.2
• source code
• Topic.scala

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

io.taig.phoenix.models.Topic.scala Maven / Gradle / Ivy

package io.taig.phoenix.models

import io.circe.{ Decoder, Encoder }
import cats.syntax.either._

case class Topic( name: String, identifier: Option[String] ) {
    def isSubscribedTo( topic: Topic ): Boolean = topic match {
        case Topic( `name`, `identifier` ) ⇒ true
        case Topic( `name`, None )         ⇒ true
        case _                             ⇒ false
    }

    def serialize = name + identifier.map( ":" + _ ).getOrElse( "" )

    override def toString = s"Topic($serialize)"
}

object Topic {
    implicit val encoder: Encoder[Topic] = {
        Encoder[String].contramap( _.serialize )
    }

    implicit val decoder: Decoder[Topic] = {
        Decoder[String].emap { topic ⇒
            Either.fromOption( parse( topic ), "Invalid format" )
        }
    }

    val Phoenix = Topic( "phoenix" )

    val Pattern = "(\\w+)(?::(\\w+))?".r

    def apply( name: String, identifier: String ): Topic = {
        Topic( name, Some( identifier ) )
    }

    def apply( name: String ): Topic = Topic( name, None )

    def parse( topic: String ): Option[Topic] = {
        topic match {
            case Pattern( name, identifier ) ⇒
                Some( Topic( name, Option( identifier ) ) )
            case _ ⇒ None
        }
    }
}